The crankshaft runs in plain bearings for quieter operation and the big end of the connecting rod spins in a needle bearing, both contributing to the engine's high-performance credentials.
The PGM-FI system incorporates an Idle Air Control Valve (IACV) to smooth responses to small changes in throttle position.
Front and rear disc brakes ensure strong and consistent stopping power.
Front 21-inch and rear 18-inch wheels boast lightweight aluminum rims.
A gear-driven counterbalance shaft helps quell engine vibration for enhanced rider comfort. It's located so close to the crankshaft that the balancer weight passes between the two crank weights to keep the engine as compact as possible while improving mass centralization.
Final Drive : #520 O-ring-sealed chain; 14T/40T
Six-speed transmission with manual clutch
Extremely compact roller rocker arm design for the low-friction valve train allows the use of a smaller cylinder head.
Compact and sophisticated liquid-cooled DOHC 249 cc single-cylinder four-stroke engine produces smooth and consistent torque at low rpm, plus excellent high-rpm performance. The engine's wide spread of power makes the CRF250L easy and confidence-inspiring to ride, while also returning impressive fuel economy.
Enhancements to the engine's intake and exhaust systems for 2017 boost horsepower by a estimated full 10 percent while also increasing torque at low rpm, all without changing the CRF250L's easy-to-ride nature.
The CRF250L's Programmed Fuel Injection (PGM-FI) system continuously monitors several variables to ensure the correct fuel mixture, thereby delivering optimal performance and remarkably crisp throttle response over a wide range of operating conditions. A larger throttle body and a longer air-intake tube for 2017 contribute to the engine's significant power increase.
By changing the exhaust system's header pipe to a tapered design from a straight shape, and altering the internal structure of the muffler, engineers were able to increase overall power and torque while also reducing weight.
Chassis developed specifically for the CRF250L provides an ideal combination of on-road stability and off-road agility.
Inverted Showa fork features revised settings for 2017 for even better ride quality on the street and in the dirt.
Pro-Link single-shock rear suspension has been tweaked for 2017, improving both rider comfort and traction while maintaining the ample travel that helps make the CRF250L capable on the trail.